TUCSON- Tom McNamara and the Eyewitness News 4 Investigators have spent the last three months talking to experts and eyewitnesses. The stories are compelling and the evidence is frightening, and just this week, Colorado Congressman Tom Tancredo released a report showing that the problem is worse than anyone thought. Here's what the Eyewitness News 4 Investigators uncovered. "It's a Muslim prayer blanket. It was found about a mile and a half west from the Douglas port of entry in 2001." Larry Vance is a rancher who lives near the U.S.-Mexico border in Douglas, Arizona. For years, he says he's watched...